3 BN39-1 Stream Crossing Inventory Printout.pdf
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- Solicitation number
- RFP 171 260000002389 1
- Issued by
- Ottawa County, Michigan
About this file
This is a Stream Crossing Inventory Printout from the Michigan Department of Natural Resources (MiDNR) documenting the condition assessment of culvert crossing BN39-1, named Bill Nicholls Route, located in Ontonagon County, Michigan. The document presents a comprehensive field inventory of a metal, round culvert structure measuring 1.50 feet in width with a 60-foot total length, classified as a trail crossing. The inventory was conducted by an unnamed observer and recorded in the MiDNR's stream crossing database, with the most recent edit dated July 11, 2025. The crossing is situated at latitude 46.81 and longitude -88.99 within HUC12 Watershed Code 040201030105 and is managed by the DNR Parks Division.
The site assessment indicates severe structural deterioration requiring immediate maintenance attention. The culvert exhibits severe corrosion with rusted-through sections comprising more than 50 percent of the structure, 41-60 percent sediment plugging, and complete bottom deterioration with sediment infill covering approximately half the interior volume. The structure, which has a reported depth of 24 feet, presents significant hydraulic and passability concerns due to its compromised condition. The site comments explicitly note "Bottom gone, half filled with sediment," indicating critical infrastructure failure. No aquatic passability assessment was conducted, and time-sensitive maintenance needs were identified but not detailed in the standardized scoring sections. No non-native invasive species observations were recorded at the crossing location.
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Text version
Show Historical Inventories No
Bearing
Site ID BN39-1
Stream Name
Stream Flow Type
HUC12 Watershed Code 040201030105
Reach Code
Crossing Name Bill Nicholls Route
Observer Name No Name Given
Data Source / Affiliation MiDNR
Inventory Date
Latitude 46.81
Longitude -88.99
State/Territory Michigan
County Ontonagon County
Township 051N
Range 037W
Section 15
Adjacent Landowner Information
Are Utilities Visible at the Site
Utilities Information
Additional Comments 2733+28
Road / Crossing Owner
Road / Crossing Manager DNR Parks Division
Road / Crossing Surface
Road / Crossing Surface Condition
Road Core Integrity
Frequent Road Overtopping
Diversion Potential
Structure/Stream Alignment
Structure Skew
Road / Crossing Width (ft)
Structure Length (ft) 60.00
Location of Low Point
Runoff Path
Left Approach Length (ft)
Left Approach Slope
Left Approach Ditch Vegetation
Left Approach Erosion Estimate
(tons/yr)
Right Approach Length (ft)
Right Approach Slope
Right Approach Ditch Vegetation
Right Approach Erosion Estimate
(tons/yr)
Upstream Fill Depth (ft) 0.00
Upstream Embankment Slope
Inlet Armoring / Rip-rap
Is Bank Armoring or Rip-rap
Functional at the inlet or upstream side
Downstream Fill Depth (ft) 0.00
Downstream Embankment Slope
Outlet Armoring / Rip-rap
Is Bank Armoring or Rip-rap
Functional at the outlet or downstream side
Site Erosion Estimate Total
Crossing Type Culvert
Crossing Use Trail
Additional Crossing Use
Structure Shape: Round
Structure Material Metal
Structure Interior Corrugated
Are there Multiple Culvert/Spans at the Crossing
1 Structure Present
Structure Width (ft) 1.50
Bridge Wetted Width
Structure Height (ft) 0.00
Substrate In Structure
Stream Flow
Is the crossing affected by a dam or impoundment?
Inlet Type:
Inlet Type Additions
Wingwall Material
Inlet Water Depth (ft) 0.00
Inlet Embedded Depth (ft) 0.00
Inlet Water Velocity (ft/sec) 0.00
Ponding Present
Ponding Length (ft) 0.00
Ponding Width (ft) 0.00
Upstream Sediment Wedge Present
Outlet Type:
Outlet Water Depth (ft) 0.00
Outlet Embedded Depth (ft) 0.00
Outlet Water Velocity (ft/sec) 0.00
Velocity Measured With
Velocity Measurement Depth (ft) 0.00
Perch Height (ft): 0.00
Scour Pool Present
Scour Pool Length (ft) 0.00
Scour Pool Width (ft) 0.00
Scour Pool Depth (ft) 0.00
Crossing Sediment Deposit
% Plugged 41% - 60%
Plugged Where
% Crushed None or 0%
Crushed Where
Rusted Through Yes
General Condition Severe deterioration from corrosion or abrasion (more than 50% of the structure is rusted through) or cracking or spalling or chipping
(more than 50% of the structure is compromised). Or Major shape changes (described above) reducing the capacity of the structure by greater than 50%. OR Segment disconnect causing major subsurface erosion/piping and/or partial fill failure and/or sink holes in the fill.
Is the representative reach up stream or downstream?
Approximately how far from the culvert (to the nearest 100')?
Bankfull Width (ft) 0.00
Wetted Width (ft) 0.00
Reach Water Depth (ft) 0.00
Riffle Water Velocity (ft/sec) 0.00
Riffle Water Velocity Measured
With
Dominant Substrate
Indicators of Channel Equilibrium
Indicators of Active Degradation
Indicators of Active Aggradation
Overall Channel Stability
Entrenchment
Aquatic Passability Not Assessed
Passability Factors Not Recorded
Summary
Do you believe there is a time-sensitive maintenance need at the site?
Describe the needed maintenance at the site.
Were any non-native invasive species observed at the site?
What non native species were present?
Site Comments: Bottom gone, half filled with sediment. Structure depth 24ft.
Sizing Standards Not Assessed
Buried Depth Standards Not Assessed
PassabilityValue 0
Constricion Ratio Value 0
Inlet Type Value 0
Structure Condition Value 0
Multiple Structures Value
Structure Stream Alignment Value
Plugged Value
Crushed Value
Crossing Information Sub-score 0
Expansion Ratio 0.00
Expansion Ratio Value 0
Upstream Pond Value 0
Upstream Sediment Wedge Value 0
Crossing Sediment Deposit Value 0
Stream Information Sub-score 0
Channel Stability Value 0
Entrenchment Value 0
Morphological Sub-score 0
Road Core Integrity Value 0
Road Overtopping Value 0
Diversion Potential Value 0
Location Of Low Point Value 0
Runoff Path Value 0
Downstream Fill Depth Value 0
Inlet Armoring Value 0
Outlet Armoring Value 0
Structure Information Sub-score 0
Extent Of Erosion Value 0
Erosion Information Sub-score 0
Summary Information Value 0
Summary Information Sub-score 0
Overall Score
Parameters Evaluated
Parameters Not Evaluated
Q Crossing Inlet
Q Crossing Outlet
Q Crossing Average
Q Reach
Q Difference Reach to Crossing
ESRIGNSS_ALTITUDE 0.00
ESRIGNSS_AVG_POSITIONS 0
ESRIGNSS_H_RMS 0.00
Rosgen Morphological Summary
(Optional)
Rapid Channel Assessment Form
(Optional)
Add Additional Representative
Reach (Optional)
Last edited by RubleyM1_dnr on 7/11/2025, 11:58 AM.
File details come from the government source that posted it. Updated .